In which of the following terrestrial ecosystems would one tend to find the highest net primary productivity?
A) Temperate grassland B) Tundra and alpine region
C) Tropical seasonal forest D) Boreal forest
C
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Concerns about development in the Amazon include
A. destruction of the rain forest B. the welfare of the Indians C. failure of settlers to grow crops on their land D. all of the choices are correct
Saudi Arabia has successfully employed the international trade alternative primarily because of
A) consumer spending. B) petroleum reserves. C) regional cooperation. D) traditional social customs. E) its strategic distribution location.
Colonial economies often revolved around what economic sector?
A) primary B) secondary C) tertiary D) quaternary E) none of the above
Mudflows frequently occur on young volcanoes covered with ash.
Answer the following statement true (T) or false (F)